Abstract: In order to investigate the alkali salt-tolerant strength of introduced industrial hemp varieties, the Geliexiya（V 1）,Jindao 15（V 2） and Geliang（V 3） were used as experimental materials to study growth by simulating the alkalinity of farmland in Daqing region.And, the changes of seed germination and seedling growth of industrial hemp under alkaline salt stress were also studied and evaluated under control（pH 7.0）,mild（pH 7.89）,moderate（pH 8.91） and severe（pH 9.44）.The results showed that alkaline salt had obvious inhibitory effect on the seed germination and seedling growth of industrial hemp.Under alkaline salt stress, with the increase of pH value, the germination rate, germination potential, germination index, vigor index, radicle length, embryo length and fresh weight of germ with radicle showed a gradually decreasing trend, while the alkali salt damage index showed a gradually increasing trend.The alkali salt tolerance degree of different industrial hemp varieties was different.Under the stress of strong alkaline salt, the radicle and germ began to turn yellow and decay in the later stage of germination of industrial hemp seeds.According to the comprehensive evaluation of alkaline salt tolerance, the order of alkaline salt tolerance of the three industrial hemp varieties was V 1＞V 3＞V 2.This study enriched the seed resources of industrial hemp and had practical guiding significance for promoting industrial hemp cultivation in saline area.